390
FNCA52 TJSJ 130729
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
329 AM AST THU NOV 13 2025
DISCUSSION
A SMALL PATCH OF MOISTURE WILL MOVE ACROSS THE ISLANDS TODAY,
MAINTAINING RELATIVE HUMIDITIES AROUND 60%. WINDS WILL BE FROM THE
EAST AT 15 MPH. THE RISK OF FIRE SPREADING IS LOW FOR TODAY.
PRZ014-140730-
SOUTHEAST COASTAL PLAINS-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 0 40
TEMP (24H TREND) 88 (+1) 72 (-2) 88
RH % (24H TREND) 62 (+6) 92 (+3) 56
WIND 20FT/EARLY(MPH) E 16 G21 NE 10 SE 12
WIND 20FT/LATE(MPH) E 16 G21 NE 10 SE 12
MIXING HGT(FT-AGL/MSL)4730 4740
TRANSPORT WND (MPH) E 12 E 8
VENT RATE (KT-FT) 47300 33180
DISPERSION 5 5
DSI 6 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-140730-
SOUTHERN HILLS-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 60
TEMP (24H TREND) 86 (+3) 68 (-4) 85
RH % (24H TREND) 63 (-4) 96 (+4) 59
WIND 20FT/EARLY(MPH) E 11 E 9 SE 10
WIND 20FT/LATE(MPH) E 11 E 9 SE 10
MIXING HGT(FT-AGL/MSL)5430 5510
TRANSPORT WND (MPH) E 12 E 6
VENT RATE (KT-FT) 54300 27550
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-140730-
NORTH COASTAL PLAINS-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 20
TEMP (24H TREND) 87 (+2) 72 (-2) 89
RH % (24H TREND) 65 (-6) 95 (+1) 58
WIND 20FT/EARLY(MPH) E 14 G17 E 12 E 11
WIND 20FT/LATE(MPH) E 14 G17 E 12 E 11
MIXING HGT(FT-AGL/MSL)4700 4510
TRANSPORT WND (MPH) E 13 E 7
VENT RATE (KT-FT) 51700 27060
DISPERSION 5 5
DSI 6 4 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-140730-
NORTHERN HILLS-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 50
TEMP (24H TREND) 86 (+2) 68 (-4) 87
RH % (24H TREND) 67 (-2) 96 (+1) 58
WIND 20FT/EARLY(MPH) E 12 E 10 NE 9
WIND 20FT/LATE(MPH) E 12 E 10 NE 9
MIXING HGT(FT-AGL/MSL)5180 5340
TRANSPORT WND (MPH) E 10 NE 5
VENT RATE (KT-FT) 46620 21360
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-140730-
WEST COAST-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 60 70
TEMP (24H TREND) 89 (+1) 70 (-2) 89
RH % (24H TREND) 62 (-5) 96 (+3) 60
WIND 20FT/EARLY(MPH) E 11 E 11 SE 10
WIND 20FT/LATE(MPH) E 11 E 11 SE 10
MIXING HGT(FT-AGL/MSL)4690 4420
TRANSPORT WND (MPH) E 7 SE 5
VENT RATE (KT-FT) 28140 17680
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-140730-
EASTERN INTERIOR-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 20
TEMP (24H TREND) 86 (+2) 69 (-4) 89
RH % (24H TREND) 66 (-2) 97 (+1) 57
WIND 20FT/EARLY(MPH) E 10 E 9 SE 8
WIND 20FT/LATE(MPH) E 10 E 9 SE 8
MIXING HGT(FT-AGL/MSL)5150 5880
TRANSPORT WND (MPH) E 10 SE 6
VENT RATE (KT-FT) 46350 29400
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-140730-
LUQUILLO MOUNTAIN RANGE-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 20
TEMP (24H TREND) 82 (+3) 67 (-4) 84
RH % (24H TREND) 72 (-5) 100 (+1) 61
WIND 20FT/EARLY(MPH) E 9 E 6 SE 6
WIND 20FT/LATE(MPH) E 9 E 6 SE 6
MIXING HGT(FT-AGL/MSL)3630 4130
TRANSPORT WND (MPH) E 12 SE 7
VENT RATE (KT-FT) 36300 24780
DISPERSION 5 5
DSI 6 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-140730-
CENTRAL MOUNTAIN RANGE-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 50 70
TEMP (24H TREND) 84 (+4) 66 (-4) 85
RH % (24H TREND) 66 (-5) 96 (+2) 62
WIND 20FT/EARLY(MPH) E 8 E 8 SE 6
WIND 20FT/LATE(MPH) E 8 E 8 SE 6
MIXING HGT(FT-AGL/MSL)5860 6710
TRANSPORT WND (MPH) E 9 E 3
VENT RATE (KT-FT) 46880 20130
DISPERSION 5 5
DSI 5 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-140730-
CAYEY MOUNTAIN RANGE-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 10
TEMP (24H TREND) 82 (+2) 68 (-3) 84
RH % (24H TREND) 69 (-2) 99 (+2) 62
WIND 20FT/EARLY(MPH) E 9 E 6 SE 8
WIND 20FT/LATE(MPH) E 9 E 6 SE 8
MIXING HGT(FT-AGL/MSL)4280 4680
TRANSPORT WND (MPH) E 12 E 7
VENT RATE (KT-FT) 42800 28080
DISPERSION 5 5
DSI 6 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-140730-
VIEQUES-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30
TEMP (24H TREND) 87 (0) 73 (-3) 89
RH % (24H TREND) 63 (-1) 96 (+5) 55
WIND 20FT/EARLY(MPH) E 11 E 12 E 6
WIND 20FT/LATE(MPH) E 11 E 12 E 6
MIXING HGT(FT-AGL/MSL)3260 3590
TRANSPORT WND (MPH) E 16 E 10
VENT RATE (KT-FT) 45640 32310
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-140730-
CULEBRA-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 30
TEMP (24H TREND) 89 (+1) 73 (-3) 90
RH % (24H TREND) 60 (-6) 96 (+1) 54
WIND 20FT/EARLY(MPH) E 11 E 11 SE 8
WIND 20FT/LATE(MPH) E 11 E 11 SE 8
MIXING HGT(FT-AGL/MSL)3210 3460
TRANSPORT WND (MPH) E 16 E 10
VENT RATE (KT-FT) 44940 31140
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-140730-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 40
TEMP (24H TREND) 89 (+1) 72 (-2) 89
RH % (24H TREND) 58 (+2) 92 (+3) 57
WIND 20FT/EARLY(MPH) E 17 G22 E 11 SE 14 G19
WIND 20FT/LATE(MPH) E 17 G22 E 11 SE 14 G19
MIXING HGT(FT-AGL/MSL)5320 4930
TRANSPORT WND (MPH) E 10 SE 10
VENT RATE (KT-FT) 47880 44370
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-140730-
SAINT THOMAS AND SAINT JOHN-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 30
TEMP (24H TREND) 86 (+2) 70 (-5) 86
RH % (24H TREND) 66 (-7) 100 (+4) 59
WIND 20FT/EARLY(MPH) E 11 E 12 E 6
WIND 20FT/LATE(MPH) E 11 E 12 E 6
MIXING HGT(FT-AGL/MSL)3180 3490
TRANSPORT WND (MPH) E 14 E 12
VENT RATE (KT-FT) 38160 34900
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-140730-
ST CROIX-
329 AM AST THU NOV 13 2025
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30
TEMP (24H TREND) 89 (+1) 73 (-3) 89
RH % (24H TREND) 61 (-5) 96 (+3) 56
WIND 20FT/EARLY(MPH) E 12 E 12 E 8
WIND 20FT/LATE(MPH) E 12 E 12 E 8
MIXING HGT(FT-AGL/MSL)3780 4070
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 49140 32560
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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